version key update (opentensor#185)

Author: Eugene-hu

hyperparameters.md

@@ -32,7 +32,7 @@ ActivityCutoff: u16 = 5000;
 MaxRegistrationsPerBlock: u16 = 1;
 PruningScore : u16 = u16::MAX;
 BondsMovingAverage: u64 = 900_000;
-WeightsVersionKey: u64 = 1000;
+WeightsVersionKey: u64 = 1020;
 MinDifficulty: u64 = 10_000_000;
 MaxDifficulty: u64 = u64::MAX / 4;
 ServingRateLimit: u64 = 10;